theme: adjust breadcrumb and title for empty home page titles

[McShelby]

Good morrow!

I've changed the authoring in the showcase. Because it is centered on the theme's usage, I omit links to the authors (also the heading would get to crouded with links).

Yup I get the reasoning. In that case, would you be so kind and adapt it to NEONsys.org? It is what I am using in case hyperlinking is not possible, eg in the license file.

Looks spiffy

Thank you! Would you mind helping me out with some last, still unresolved issues?

1. Redundant artifact in breadcrumb bar:
   

Since the beginning I always having that starting > in my breadcrumb bar. I find it unnecessary and would like to get rid of it :) I saw that your example page does not exhibit this behaviour, so I wonder what causes it.

2. Selector in front of title, even on main page:
   
   Huh now that I think of it, maybe those two issues are related? Your exampleSite also does not show this behaviour.

Originally posted by @Nuc1eoN in #175 (comment)

[McShelby]

@Nuc1eoN: I'll take a look into this. Most likely something special with your site configuration that is not correctly handled by the theme.

[McShelby]

@Nuc1eoN: The reason for this is, that your home page (your content/_index.md does not have a title. I am not sure if this is a good idea in general as a lot of other functionality in the theme uses the title for various stuff.

Please note that therefore all non home pages are treated as hidden if they don't provide a title! This is a specific feature of the Relearn theme.

[McShelby]

I've made a fix to breadcrumbs and titles to fix this special case. This will only work for the home page as all other pages without a title are treated as hidden.

So the fix is this: If no title is set, the site`s title is used.

If the page title is equal to the site's title, only the site title will be printed without the titleSeparator.

Nevertheless I advise you to give a title to all pages. In case of the home page, just give it the same title as the title parameter from your config.toml.

In a multilang installation also the [Languages.en] title should have the same value.

I have fixed this for the exampleSite, so you can look at the patch to see in which locations you may need to fix this.

[Nuc1eoN]

Ahh I never would have guessed. I have added a title now.

But you've also came up with a great fallback behaviour - kudos!